Mitsubishi Electric MELSEC iQ-R Series User Manual page 203

Considerations for performing data communication
■When communicating data with the target device
• When setting the no-communication interval time to 'Infinite wait' (setting value = 0) in the initial setting of C24, be sure to
perform line disconnection after the completion of data communication.
• Only the nonprocedural protocol/bidirectional protocol data communication can be performed with the CPU module with
C24 installed.
• C24 automatically performs line disconnection processing if no data communication is performed during the no-
communication interval time.
The 'Connection' (X12) and the 'Modem initialization completion' (X10) turn OFF and the 'Modem disconnection completion'
(X14) turns ON when the line disconnection processing is performed.
7 COMMUNICATIONS BY THE MODEM FUNCTION
7.4 Startup of the Modem Function
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